<template>
  <div class="login-container">
    <van-nav-bar class="page-nav-bar" title="登录"/>
    <van-form ref="loginForm" @submit="onSubmit">
      <van-field
        type="number"
        maxlength="11"
        v-model="user.mobile"
        name="mobile"
        placeholder="请输入手机号"
        :rules="userFormRules.mobile"
      >
        <i slot="left-icon" class="iconfont iconshouji"></i>
      </van-field>
      <van-field
        type="number"
        maxlength="6"
        v-model="user.code"
        name="code"
        placeholder="请输入验证码"
        :rules="userFormRules.code"
      >
        <i slot="left-icon" class="iconfont iconyanzhengma"></i>
        <template #button>
          <van-count-down :time="1000*10" format="ss s" v-if="isCountdownShow" @finish="isCountdownShow = false" />
          <van-button v-else class="send-sms-btn" round size="small" native-type="button" @click="onSendSms">发送验证码</van-button>
        </template>
      </van-field>
      <div class="login-btn-wrap">
        <van-button class="login-btn" round block type="info" native-type="submit">
          登录
        </van-button>
      </div>
    </van-form>
  </div>
</template>
<script>
import {login, sendSms} from '@/api/user'
export default {
  name:'LoginIndex',
  data(){
    return{
      user:{
        mobile:'',//手机号
        code:''//验证码
      },
      userFormRules:{
        mobile:[
          {
            required:true,
            message:'手机号不能为空'
          },
          {
            pattern:/^1[3|5|7|8|9]\d{9}$/,
            message:'手机号格式错误'
          }
        ],
        code:[
          {
            required:true,
            message:'请填写验证码'
          },
          {
            pattern:/^\d{6}$/,
            message:'验证码格式错误'
          }
        ]
      },
      isCountdownShow:false
    }
  },
  methods:{
    async onSubmit() {
      //获取表单数据
      const user = this.user
      //表单验证
      this.$toast.loading({
        message:'登录中...',
        forbidClick:true,//禁用背景点击
        duration:0//持续时间，默认2000，0是一直
      })
      //提交表单请求登录
      try {
        const {data} = await login(user)
        console.log('登录成功', data)
        this.$store.commit('setUser', data.data)
        this.$toast.success('登录成功')
      } catch (err) {
        if (err.response.status === 400) {
          console.log('手机号或验证码错误')
          this.$toast.fail('手机号或验证码错误')
        } else {
          console.log('登录失败，请稍后重试', err)
          this.$toast.fail('登录失败，请稍后重试')
        }
      }
      //根据请求响应结果处理后续操作
    },
    async onSendSms(){
      //1验证手机号
      try {
        await this.$refs.loginForm.validate('mobile')
      } catch (err) {
        return console.log('验证失败', err)
      }
      //2.通过验证，出倒计时
      this.isCountdownShow = true
      //3.请求发送验证码
      try{
        await sendSms(this.user.mobile)
        this.$toast('发送成功')
      }catch(err){
        this.isCountdownShow = false
        if(err.response.status === 429){
          this.$toast('发送太频繁了，请稍后再试')
        }else{
          this.$toast('发送失败，请稍后再试')
        }
      }
    }
  }
}
</script>
<style lang="less" scoped>
.login-container{
  .iconfont{
    font-size: 37px;
  }
  .send-sms-btn{
    background: #ededed;
    color:#666;
    height: 46px;
    line-height: 46px;
    font-size: 22px;
  }
  .login-btn-wrap{
    padding:53px 33px;
    .login-btn{
      background: #6db4fb;
      border:none;
    }
  }
}

</style>